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MPI_File_iwrite_shared(3OpenMPI)                                            MPI_File_iwrite_shared(3OpenMPI)



NAME
       MPI_File_iwrite_shared - Writes a file using the shared file pointer (nonblocking, noncollective).




SYNTAX
       C Syntax
           #include <mpi.h>
           int MPI_File_(MPI_File fh, void *buf, int count, MPI_Datatype
                  datatype, MPI_Request *request)

       Fortran Syntax
           INCLUDE 'mpif.h'
           MPI_File_(FH, BUF, COUNT, DATATYPE, REQUEST, IERROR)
                 <type>         BUF(*)
                 INTEGER        FH, COUNT, DATATYPE, REQUEST, IERROR


C++ Syntax
       #include <mpi.h>
       MPI::Request MPI::File::Iwrite_shared(const void* buf, int count,
            const MPI::Datatype& datatype)


INPUT/OUTPUT PARAMETER
       fh        File handle (handle).


INPUT PARAMETERS
       count     Number of elements in buffer (integer).

       datatype  Data type of each buffer element (handle).


OUTPUT PARAMETERS
       buf       Initial address of buffer (choice).

       request   Request object (handle).

       IERROR    Fortran only: Error status (integer).


DESCRIPTION
       MPI_File_iwrite_shared is a nonblocking routine that uses the shared file pointer to write files. The
       order of serialization is not deterministic for this noncollective routine, so you need to use  other
       methods of synchronization to impose a particular order.


ERRORS
       Almost  all  MPI  routines return an error value; C routines as the value of the function and Fortran
       routines in the last argument. C++ functions do not return errors. If the default  error  handler  is
       set  to MPI::ERRORS_THROW_EXCEPTIONS, then on error the C++ exception mechanism will be used to throw
       an MPI:Exception object.

       Before the error value is returned, the current MPI error handler is called.  For  MPI  I/O  function
       errors,  the default error handler is set to MPI_ERRORS_RETURN. The error handler may be changed with
       MPI_File_set_errhandler; the predefined error handler MPI_ERRORS_ARE_FATAL may be used  to  make  I/O
       errors fatal. Note that MPI does not guarantee that an MPI program can continue past an error.




Open MPI 1.2                                   September 2006               MPI_File_iwrite_shared(3OpenMPI)